High-Quality Material: Alligator clips are made of high-purity copper and PVC material with good electrical conductivity, nickel-plated for a smooth surface that won't damage wires. These alligator clips offer rust-proof, corrosion-resistant, and anti-oxidation properties, ensuring high durability. Product Features: Connected by spot welding, primarily for DIY flow. It's a miniature device for bonding parts and a wire for soldering. It serves as a great household soldering tool and electrical testing tool. Multiple Colors: Available in five different wire colors, allowing for easy viewing of wiring status and simple identification of measurement results. Safety Design: Consists of two parts: a metal alligator clip with an insulating cover, ensuring safe use and excellent electrical conductivity. Wide Application: These alligator clips have a broad range of uses, primarily with multimeters and other instruments and meters for home, school, and automotive applications. Commonly used in school physics labs for quick circuit assembly.